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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
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    <title>Document</title>
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<body>
    <table border="1" width="500px" height="300px" align="right" cellspacing="12px" cellpadding="1">
        <tr>
            <th>姓名</th>
            <th>年龄</th>
        </tr>
        <tr valign="bottom">
            <td width="150px" height="50px">张三</td>
            <td valign="top">18</td>
        </tr>
        <tr align="center">
            <td align="right">李四</td>
            <td>19</td>
        </tr>
    </table>
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